/**
 * This file is part of WiiuseJ.
 *
 *  WiiuseJ is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  WiiuseJ is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with WiiuseJ.  If not, see <http://www.gnu.org/licenses/>.
 */
package wiiusej.utils;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.Toolkit;
import java.awt.geom.AffineTransform;
import wiiusej.wiiuseapievents.ButtonsEvent;
import wiiusej.wiiuseapievents.DisconnectionEvent;
import wiiusej.wiiuseapievents.IREvent;
import wiiusej.wiiuseapievents.MotionSensingEvent;
import wiiusej.wiiuseapievents.StatusEvent;
import wiiusej.wiiuseapievents.WiimoteListener;

/**
 * This panel is used to see what buttons are pressed.
 * It displays the result of last ButtonsEvent.
 * @author  guiguito
 */
public class ButtonsEventPanel extends javax.swing.JPanel implements WiimoteListener {

    private Image mImage;//image for double buffering
    private Image wiimoteImage;//image for double buffering
    private ButtonsEvent buttons;
    private Color pressedColor = Color.RED;
    private Color heldColor = Color.ORANGE;
    private Color releasedColor = Color.YELLOW;
    private Shape shape;

    /**
     * Default constructor.
     * Red : button just pressed.
     * Orange : button held.
     * Yellow : button just released.
     */
    public ButtonsEventPanel() {
        Toolkit toolkit = java.awt.Toolkit.getDefaultToolkit();
        java.net.URL url = ButtonsEventPanel.class.getResource("/img/wiimote.png");
        wiimoteImage = toolkit.createImage(url);
        shape = new java.awt.geom.Ellipse2D.Double(0, 0, 13, 13);
        initComponents();
    }
    
    /**
     * Constructor used to set colors and shape used.
     * @param pressColor color of a button just pressed.
     * @param hColor color of a button held.
     * @param relColor color of a button just released.
     * @param sh shape draw on the buttons.
     */
    public ButtonsEventPanel(Color pressColor, Color hColor, Color relColor, Shape sh) {
        pressedColor = pressColor;
        heldColor = hColor;
        releasedColor = relColor;
        shape = sh;
        Toolkit toolkit = java.awt.Toolkit.getDefaultToolkit();
        wiimoteImage = toolkit.createImage("img\\wiimote.png");
        shape = new java.awt.geom.Ellipse2D.Double(0, 0, 13, 13);
        initComponents();
    }

    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        Dimension d = getSize();
        checkOffScreenImage();
        Graphics offG = mImage.getGraphics();
        //offG.setColor(backgroundColor);
        offG.fillRect(0, 0, d.width, d.height);
        Graphics2D g2 = (Graphics2D) mImage.getGraphics();
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        //draw buttons pushed
        g2.drawImage(wiimoteImage, 0, 0, this);
        g2.setTransform(new AffineTransform());

        if (buttons != null) {
            /* button ONE */
            if (buttons.isButtonOneJustPressed()) {
                drawFunction(g2,pressedColor,53,353);
            }
            if (buttons.isButtonOneHeld()) {
                drawFunction(g2,heldColor,53,353);
            }
            if (buttons.isButtonOneJustReleased()) {
                drawFunction(g2, releasedColor, 53, 353);
            }
            
            /* button TWO */
            if (buttons.isButtonTwoJustPressed()) {
                drawFunction(g2,pressedColor,53,395);
            }
            if (buttons.isButtonTwoHeld()) {
                drawFunction(g2,heldColor,53,395);
            }
            if (buttons.isButtonTwoJustReleased()) {
                drawFunction(g2,releasedColor,53,395);
            }

            /* button A */
            if (buttons.isButtonAJustPressed()) {
                drawFunction(g2,pressedColor,53,150);
            }
            if (buttons.isButtonAHeld()) {
                drawFunction(g2,heldColor,53,150);
            }
            if (buttons.isButtonAJustReleased()) {
                drawFunction(g2,releasedColor,53,150);
            }

            /* button B */
            if (buttons.isButtonBJustPressed()) {
                drawFunction(g2,pressedColor,16,149);
            }
            if (buttons.isButtonBHeld()) {
                drawFunction(g2,heldColor,16,149);
            }
            if (buttons.isButtonBJustReleased()) {
                drawFunction(g2,releasedColor,16,149);
            }

            /* button LEFT */
            if (buttons.isButtonLeftJustPressed()) {
                drawFunction(g2,pressedColor,33,77);
            }
            if (buttons.isButtonLeftHeld()) {
                drawFunction(g2,heldColor,33,77);
            }
            if (buttons.isButtonLeftJustReleased()) {
                drawFunction(g2,releasedColor,33,77);
            }

            /* button RIGHT */
            if (buttons.isButtonRightJustPressed()) {
               drawFunction(g2,pressedColor,73,77);
            }
            if (buttons.isButtonRightHeld()) {
                drawFunction(g2,heldColor,73,77);
            }
            if (buttons.isButtonRightJustReleased()) {
                drawFunction(g2,releasedColor,73,77);
            }
            
            /* button UP */
            if (buttons.isButtonUpJustPressed()) {
                drawFunction(g2,pressedColor,54,60);
            }
            if (buttons.isButtonUpHeld()) {
                drawFunction(g2,heldColor,54,60);
            }
            if (buttons.isButtonUpJustReleased()) {
                drawFunction(g2,releasedColor,54,60);
            }

            /* button DOWN */
            if (buttons.isButtonDownJustPressed()) {
                drawFunction(g2,pressedColor,54,97);
            }
            if (buttons.isButtonDownHeld()) {
                drawFunction(g2,heldColor,54,97);
            }
            if (buttons.isButtonDownJustReleased()) {
                drawFunction(g2,releasedColor,54,97);
            }

            /* button MINUS */
            if (buttons.isButtonMinusJustPressed()) {
               drawFunction(g2,pressedColor,20,230);
            }
            if (buttons.isButtonMinusHeld()) {
                drawFunction(g2,heldColor,20,230);
            }
            if (buttons.isButtonMinusJustReleased()) {
                drawFunction(g2,releasedColor,20,230);
            }

            /* button PLUS */
            if (buttons.isButtonPlusJustPressed()) {
                drawFunction(g2,pressedColor,86,230);
            }
            if (buttons.isButtonPlusHeld()) {
                drawFunction(g2,heldColor,86,230);
            }
            if (buttons.isButtonPlusJustReleased()) {
                drawFunction(g2,releasedColor,86,230);
            }

            /* button HOME */
            if (buttons.isButtonHomeJustPressed()) {
                drawFunction(g2,pressedColor,53,230);
            }
            if (buttons.isButtonHomeHeld()) {
                drawFunction(g2,heldColor,53,230);
            }
            if (buttons.isButtonHomeJustReleased()) {
                drawFunction(g2,releasedColor,53,230);
            }

            buttons = null;
        }


        //put offscreen image on the screen
        g.drawImage(mImage, 0, 0, null);
    }

    /**
     * Function used to factorize code.
     * @param g2 where to draw a shape.
     * @param col color to use.
     * @param x x coordinates.
     * @param y y coordinates.
     */
    private void drawFunction(Graphics2D g2, Color col, int x, int y) {
        g2.setPaint(col);
        g2.translate(x, y);
        g2.draw(shape);
        g2.fill(shape);
        g2.setTransform(new AffineTransform());
    }

    /**
     * check if the mImage variable has been initialized. If it's not the case it initializes it
     * with the dimensions of the panel. mImage is for double buffering.
     */
    private void checkOffScreenImage() {
        Dimension d = getSize();
        if (mImage == null || mImage.getWidth(null) != d.width || mImage.getHeight(null) != d.height) {
            mImage = createImage(d.width, d.height);
        }
    }

    public void onButtonsEvent(ButtonsEvent arg0) {
        setSize(wiimoteImage.getWidth(this), wiimoteImage.getHeight(this));
        buttons = arg0;
        repaint();
    }

    public void onIrEvent(IREvent arg0) {
    //nothing
    }

    public void onMotionSensingEvent(MotionSensingEvent arg0) {
    //nothing
    }

    public void onStatusEvent(StatusEvent arg0) {
    //nothing
    }

    public void onDisconnectionEvent(DisconnectionEvent arg0) {       
        buttons = null;
        repaint();
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE)
        );
    }// </editor-fold>//GEN-END:initComponents
    // Variables declaration - do not modify//GEN-BEGIN:variables
    // End of variables declaration//GEN-END:variables
}
